CR2032 3V Lithium Coin Battery

CR2032 3V Lithium Coin Battery is a ubiquitous and highly reliable power source, offering stable 3V energy in a compact, lightweight form factor. This button cell utilizes Lithium Manganese Dioxide (Li-MnO₂) chemistry, delivering an exceptional energy density and a long shelf life, typically exceeding 10 years. Consequently, the CR2032 has become the industry standard for low-drain, portable electronics that demand consistent performance over extended periods. Therefore, designers rely on this cell to maintain essential functions like real-time clocks and non-volatile memory in countless consumer and industrial devices. You can confidently power everything from remote controls to critical medical sensors with the robust and proven CR2032 battery.

Key Features:

• High Terminal Voltage: Provides a stable nominal voltage of 3.0 V, ideal for modern low-power digital integrated circuits.
• Exceptional Energy Density: The Li-MnO₂ chemistry delivers a high power-to-weight ratio, which is crucial for miniature portable devices.
• Long Shelf Life: The battery maintains excellent capacity retention; furthermore, its low self-discharge rate allows storage for up to 10 years at room temperature.
• Wide Temperature Range: Operates effectively across a broad temperature spectrum, typically from −20°C to +70°C, offering reliable performance in diverse environments.
• No Heavy Metals: This cell does not contain mercury, making disposal less problematic compared to older battery chemistries.

Technical Specifications:

• Nominal Voltage: 3.0 V
• Standard Capacity: ≈ 220 mAh (Varies slightly by manufacturer)
• Chemistry: Lithium Manganese Dioxide (Li-MnO₂)
• Standard Discharge Current: 0.2 mA
• Maximum Continuous Discharge Current: Typically 3.0 mA
• Operating Temperature Range: −20°C to +70°C

Mechanical Specifications:

• Shape: Coin / Button Cell
• Case Material: Stainless Steel
• Sealing: Crimped Gasket Seal (Ensuring leak resistance)
• Weight: ≈ 3.0 g (Extremely lightweight)

Dimensions:

• Diameter: 20.0 mm
• Height (Thickness): 3.2 mm
• Nomenclature Decoding: “CR” denotes Lithium Manganese Dioxide, “20” denotes 20 mm diameter, and “32” denotes 3.2 mm thickness.

Pinout and Wiring:

• Top Surface: The large, flat surface is the positive terminal (Anode, +).
• Bottom Surface: The side shell and small bottom circle are the negative terminal (Cathode, −).
• Usage Note: Always insert the battery into the holder with the positive terminal facing the contact indicated by the ‘+’ symbol; consequently, this prevents damage due to polarity reversal.

Datasheet Reference:

• Download Energizer CR2032 Datasheet

Commonly Used in:

• Computer Motherboards: Providing power for the BIOS/CMOS settings and the Real-Time Clock (RTC).
• Remote Controls and Key Fobs: Essential power for automotive keyless entry systems and TV remotes.
• Medical Devices: Powering glucose meters, portable thermometers, and small health monitors.

Applications:

• RTC Backup: Maintaining time and date on integrated circuits during main power loss.
• Small LED Lighting: Providing illumination for miniature lights and novelty items.
• Wearable Technology: Powering fitness trackers, smartwatches, and small sensors where space is limited.
• Electronic Toys: Supplying long-lasting power for interactive toys and small handheld games.

Equivalent Models:

• DL2032: This is a common manufacturer designation (Duracell) that is electrically and physically identical to the CR2032.
• ECR2032: Another widely recognized industry designation that is fully interchangeable with the CR2032 cell.
• BR2032: However, note that this is a different chemistry (Lithium Poly-Carbon Monofluoride) with slightly different discharge characteristics, typically used as an alternative.

Package Includes:

• 1 x CR2032 3V Lithium Coin Battery